
/* 
 export 和 export default混合使用 等于 { a: 1, b: 2, default: { c: 3, d: 4 } }
export default 导出后 引入才能  import xxx  from './esm.mjs'   xxx自定义 默认取键为default的值
export 导出后 必须  import {a}  from './esm.mjs'   a为导出对应的键  或者 import * as test  test自定义
export const a = 1   等于 const a = 1  export {a}
*/


let a = 1
const b = 2
const c = 3
const d = 4

setTimeout(() => { a = 11 }, 100)
export { a, b }
export const e = 5
export const f = { f: 6 }
export default {
  c, d
}
